Typewriting-machine



I T. c. F'RAD SHAM. TYPEWRITING -I\ IIACHINE APPLICATION FILED NOV. 22.1917- RENEWED JAN. 26 1920- 1,333,166. Patented Ma r 9, 1920.

manta THOMAS C. FRADSHAM, OF CARSON CITY, NEVADA.

I Specification of Letters Eatcnt.

TYPEWBITING-MAGHIHE.

Patented Mar. 192% Application siee'h'cvemeer ea sir, Serial no. acacia.Renewed January ac, 1920. serial no. senses.

To an cobom it may concern Be it known that I, THOMAS C. hn iosnnn, acitizen of the United States, residing at Carson City, in the county of'Ormsby, State of Nevada, have invented certain new and usefulimprovements in Typewriting-Ma chinesgfend l'do hereby declare thefollow ing'to be a. full, clear and exact description at theinventiomsuch as will enable others skilled in the art to which itappertains to make and use the/same.

This invention is an improvement in'typewriting machines and hasparticular reference to a signaling attachment therefor.

An object of the invention is to provide an improved attachment which,when mounted in osition on a-typewriting machine, will indicate, at apredetermined point, that the lines are approaching the end of the pagethus enabling the operator to accurately terminate the last line ortypewriting the desired distance from the bottom of the 'ae. P A

nether object is to provide an attachment of this character which 18simple in construction, easy to manufacture, readily.

companying drawing wherein Figure 1 is a fragmentary plan view of thecarriage of a typewriting machine show in% the invention appliedthereto.

ig.- 2 is a section taken on the line 2--2 of Fig. 1 showing parts ofthe attachment in their positions previous to being actuated.

Fig. 3 is a View similar to Fig. 2 showing arts of the attachment intheir positions ust previous to the operation of the signals.

Fig. 4; is a section on the line i-4 of ig. 5 is a detail perspectiveview of the striker arm and trip member carried thereby.

Referring more particularly to the drawingthe numeral 5 indicatesconventionally the carriage of a typewriting machine of knownconstruction having the usual platen 6 mounted therein and provided witha shaft 7 having a turning knob 8 upon the end thereof.

The attachment which comprises the essential feature of the inventionpreferably supporting the small bell 10 with which is.

associated a striker 11 including a resilient arm secured at one end tothe carriage 5 as indicated at 12. I

A. large gear 13 is preferably mounted upon a screw i i or other pivotsecured to the adjacent end of the carriage 5 and said gear is providedwith a dial face having a plurality of apertures 15 adjacent theperiphery thereof and said apertures are numbered and the distancebetween adjacent apertures designed to indicate one inch oi the lengthof a sheet of paper. An adjustable spring arm 16 has one end mountedupon the screw 14 and is movable around the dial to any de-' siredposition, said arm carrying at its outer end, a loclring pin 1'?adjustable into engage ment with any one of the apertures or openings 15so as to releasably retain the arm 16 in an adjusted position.

The striker arm 11 preferably carries a lug 18 adjacent its secured endand said lug; has a projecting shoulder 19 thereon which engages in arecess 20 formed in a trip arm 21 when the same is in normal positiousaid arm being pivoted to the lug 18 at 22 and having; a beveled end 28the under side of which is adapted to be engaged by the enlarged head 24of the pin 17 at a predetermined time to bodily move said trip andstriker away from the bell 10 and then release said parts to permit thestriker to engage the 'bell. This action occurs when the gear 13 isrotated in a counter clock-- of a similar gear 26 mounted upon the shaft7 of the platen 6 and it will thus be seen that said gear 13 will berotated each time the platen is turned duringthe writing upon a sheet ofpaper.

In practice, should a sheet of paper or page ten inches long be insertedinto the machine and written upon and should it be progress of desiredto terminate the writing one inch from the bottom of the page, the pin17 is disengaged from the gear 13 and the spring arm 16 is then rotateduntil said pin 17 is in registration with the aperture lltlll'lbQl'QCl.9 whereupon said pin is engaged with said aperture so that the arm 16svill more with the gear as the s: .ie is rotated. Before placing thepaper in the carriage however, the dial is turned until the arm 16 isadja cent the upper edge of the trip It will thus be apparent that asthe gear 13 is rotated the arm 16 will approach and finally engage thelower edge of the trip 21 and move the same and the striker lloutwardlyand upon further movement of said armthe trip will be disengaged and thestriker released to strike the bell 10. In this manner the operator Willbe informed that the last line oftypewriting is at the desireddistancefrom the bottom of the page.

What is claimed is 1. The combination with a typewriter platen of my adisk rotatable therefrom, a striker adjustable rotatably of the disk, abell, a spring, clapper for the bell fixed at one end and a stripcarried by the clap- ,iee

per in the path of movement of the striker and operable by movement ofthe striker in one direction only, to retract and snbsequently releasethe clapper, the trip having lost motion with respect to the clapper under the influence of movement of the striker in the opposite direction.

movement of the striker and having lost mo tion with respect to theclapper under the influence of movement of the striker in the oppositedirection.

In testimony whereof, I afiix my signature in the presence of twowitnesses.

THOMAS C. FRADSHAM.

Witnesses:

EDGAR S. LA CLA1R,.

W ALTER S. DUoAN.

